JP2018504328A - Cap for container for post-forming gel cleansing composition - Google Patents

Abstract

The container comprises a body of plastic material having a “bag on valve” configuration. The bag extends down from the valve and contains the post-forming gel cleansing composition. A propellant is provided in the container outside the bag to pressurize the post-forming gel cleansing composition in the bag, and when the valve is opened by depressing the valve stem, the post-forming gel cleansing composition is released through the valve stem. The The container includes a cap, and the cap includes a guideway for directing the composition from the valve stem to the outlet orifice. The guide path comprises an expansion chamber that receives the composition from the valve stem, a neck that receives the composition from the expansion chamber and has a smaller diameter than the expansion chamber, and a nozzle that has a diameter larger than the neck and is provided with an exit orifice. ing. [Selection] Figure 2

Description

  The present invention relates to a container cap for a post-forming gel cleansing composition.

  Post-foaming gel cleansing compositions as disclosed in EP 1493802 are common products. Currently, they are discharged from tinplate or aluminum cans via a “bag on valve” system. The post-forming gel composition is provided in a bag connected to the can valve and the can is pressurized (outside of the bag) to push the product out of the can so that the bag is compressed when the valve is opened. The pressure in the bag is provided by liquid butane and is about 3 bar (300 kPa). This is sufficient to release foam, but ensures that it does not foam immediately at the outlet, appears as a gel before foaming and does not squirt too far from the can. These can be a problem for gel-type products that do not atomize as they exit the can at high pressures.

  For reasons such as cost and environment, it is considered desirable to use plastic cans instead of the currently used tin / aluminum cans. However, for various reasons, plastic containers cannot simply replace existing metal cans. For example, butane, the same propellant, should not be used as a propellant in a plastic container. Since the propellant used must be non-flammable, a gas such as compressed nitrogen or air must be used instead. This results in a higher initial pressure in the vessel, a typical initial pressure of 7-8 bar, and reduced product discharge from the bag.

  Current caps for post-forming gels have a conduit that defines a flow path from the valve to the exit orifice. The cap is provided with a nozzle extending inward from the cap side so as to be located directly above the valve stem. A small hole is provided on the underside of the nozzle on the cap, connecting the nozzle on the cap and the opening through the valve stem. An annular surface is provided around a small hole connected to the nozzle and when the annular surface above the valve stem is pushed and pushed towards the body of the can, the valve opens and the gel is discharged.

  Using existing caps with current post-forming gel cleansing compositions in under higher pressure plastic containers leads to unacceptable jetting distances. Under high pressure, the gel passes through the taxiway and is discharged from the bag at a higher rate, making it difficult for the user to capture and control the discharged gel. As the diameter of the guideway through the nozzle in the cap increases, the rate of flow from the container can be reduced, reducing the injection distance to an acceptable level (eg, less than 60 cm). However, the quality of the gel discharged through the nozzle is significantly inferior and lacks transparency. The post-forming gel is initially opaque or cloudy so that the contrast between the gel and lather can be fully understood, for example as designed in EP 1493802 It is highly desirable to be transparent.

European Patent No. 1493802 U.S. Pat. No. 7,730,911 WO2011042759

  The object of the present invention is to ameliorate or reduce these problems associated with housing a post-forming gel cleansing composition in a plastic container.

  In one form of the invention, a container is provided that includes a body including a bag of plastic material. The bag depends from the valve to contain the post-forming gel cleansing composition. The valve has a valve stem. A propellant is provided in a container outside the bag to apply pressure to the post-forming gel cleansing composition in the bag. Depressing the valve stem to open the valve releases the post-forming gel cleansing composition through the valve stem. The container includes a cap that includes a guideway for directing the composition from the valve stem to the outlet orifice. The guideway includes an expansion chamber for receiving the composition from the valve stem, a neck for receiving the composition from the expansion chamber that is smaller in diameter than the expansion chamber, and an exit orifice and And a nozzle having a large diameter.

  In another aspect of the present invention, a cap for a container is provided that includes a body including a bag. The bag extends down from the valve and houses the post-forming gel. A propellant is provided in the container outside the bag to apply pressure to the post-forming gel in the bag. When the valve is opened, a post-forming gel is released through the valve. The cap is provided with a guiding path for directing the composition from the valve to the outlet orifice. The guide channel comprises an expansion chamber for receiving the composition from the valve, a neck for receiving the composition from the expansion chamber that is smaller in diameter than the expansion chamber, and a nozzle having an exit orifice and a diameter larger than the neck ing. In particular, a tapered mouth portion is provided between the expansion chamber and the neck.

  Providing an expansion chamber that allows the gel that enters it to first expand before it gets thinner by the neck and pass through the nozzle of the cap, thus not only maintaining a high quality transparent gel, but also an excessive spray distance A sufficiently large diameter nozzle can be tolerated. The following optional / preferred features apply equally to both forms.

  The guide path preferably comprises a frustoconical mouth portion between the expansion chamber and the neck.

  The diameter of the exit orifice is preferably between 2.5 mm and 3.5 mm, more preferably between 2.7 mm and 3.3 mm. The nozzle preferably has a substantially constant inner diameter between 2.5 mm and 3.5 mm, more preferably between 2.7 mm and 3.3 mm.

  Furthermore, the exit orifice diameter and nozzle inner diameter are more preferably about 3 mm which is substantially constant.

  When equipped with the expansion chamber and neck of the present invention, this size nozzle and outlet orifice provide the proper injection distance, even in products under high pressure.

  The expansion chamber and / or neck and / or nozzle are preferably cylindrical.

  The inner diameter of the neck is preferably between 0.7 mm and 1.1 mm, more preferably between 0.8 mm and 1 mm, and most preferably about 0.9 mm.

  The inner diameter of the expansion chamber is preferably between 2.5 mm and 3.5 mm, more preferably between 2.7 mm and 3.3 mm, and most preferably about 3 mm.

  The inner diameter of the expansion chamber is preferably substantially equal to the inner diameter of the nozzle and / or outlet orifice.

  The ratio between the inner diameter of the nozzle and / or expansion chamber and the diameter of the neck is preferably from 2.5: 0.9 to 3.5: 0.9, 2.7: 0.9 to 3.3: More preferred is 0.9, and most preferred is about 3: 0.9.

  The neck length is preferably between 0.7 mm and 1.1 mm, more preferably between 0.8 mm and 1 mm, and most preferably about 0.9 mm.

  The ratio of neck length to neck diameter is preferably from 0.6: 1 to 1.5: 1, more preferably from 0.8: 1 to 1: 1.2, about 1: Most preferred is 1.

  The length of the truncated cone-shaped mouse part is preferably between 0.3 mm and 0.4 mm, more preferably between 0.32 mm and 0.38 mm, and about 0.35 mm. Most preferred.

  The length of the expansion chamber is preferably between 1 mm and 2 mm, more preferably between 1.35 mm and 1.65 mm, and most preferably about 1.52 mm.

  The ratio of the length of the expansion chamber to the diameter of the expansion chamber is preferably 0.75: 3 to 2.5: 3, more preferably 1: 3 to 2: 3, about 1.5: Most preferably, for example 1.52: 3.

  The propellant may be a non-flammable compressed gas, preferably nitrogen or air.

  In the case where there is a gel in the bag, the propellant is preferably at a pressure of at least 2.2 bar to at least 7.3 bar until substantially all of the contents of the bag are drained. The initial pressure of the propellant (when the gel is in the bag) is preferably between 6 and 10 bar, more preferably between 7 and 8 bar.

  The expansion chamber and the neck are preferably coaxial.

  The post-forming gel is preferably a post-forming gel cleansing composition.

  The post-forming gel preferably contains a post-foaming agent.

  The post-forming agent is preferably provided in a weight / weight ratio of 5:95 to 85:15 relative to the base gel.

  The weight / weight ratio between the post-forming agent and the base gel is preferably about 10:90.

  The post-forming agent is preferably a non-polar saturated aliphatic hydrocarbon having 3 to 6 carbon atoms.

  Post-forming agents include butane, isobutane, isopentane, isopentan, n-pentane, n-hexane, 2-methylpentane, 3-methylpentane, Preferably, it is selected from methylpentane, 2,3-dimethylbutane, 2,2-dimethylbutane and mixtures thereof.

  The discharge is preferably limited to 0.75 m to 1 m from the exit orifice. The discharge distance may be measured by standing a filled and pressurized unused container 1 on a flat (horizontal) surface and pressing the operating button 5 completely firmly. The measurement is performed from the front surface of the container 1 to the farthest point where the gel contacts the flat surface.

  The expansion chamber may be an accumulator configured to receive and accumulate gel, thereby preventing foaming and ensuring that the gel is supplied to the neck consistently.

  Post-forming gel composition is water (50% or more), 5% to 30% surfactant [surfactant] (selected from anionic, amphoteric and nonionic) And a post-forming agent (5-15%) comprising at least one nonpolar saturated aliphatic hydrocarbon having 3 to 6 carbon atoms, emollient, humectant ), Preservatives, rheology modifiers, pH adjusters, dyes, fragrances, and / or chelating agents. May be.

It is a front view of the container of the present invention. It is the fragmentary sectional view seen from the side of the cap of the container of FIG. It is sectional drawing seen from the side surface which passes through a part of cap of the container of FIG.1 and FIG.2.

  In order that the present invention may be more clearly understood, embodiments will now be described by way of example only with reference to the accompanying drawings.

  Referring to the drawings, a container 1 includes a plastic hollow, generally cylindrical body 2 that includes a bag (not shown) extending downwardly from a valve (not shown) (see US Pat. No. 7,730,911). The exemplification is incorporated herein by reference). The cylindrical body contains a propellant gas, such as compressed nitrogen, with an initial pressure of 8 bar between the container wall and the bag. In response to depression of the valve stem, the post-forming gel cleansing composition is released from within the bag via a tubular valve stem (not shown). The illustration in EP 1493802 is incorporated herein by reference. Incorporated in the description).

  The container 1 has a cap 3 with an exit orifice 4 on the front. Through the exit orifice 4, the post-forming gel cleansing composition is released in response to the operation of the button 5 formed on the cap 3.

  The cap 3 is generally frustoconical, and the top of the generally cylindrical container 1 is also provided with a frustoconical top extending upwardly to the region where a valve (not shown) is attached. The base of the cap is placed on the body of the container, and a bead 6 is provided on the inside upper side of the base for connection to the valve and the generally cylindrical body. Once connected, the stem (not shown) of the container valve (not shown) extends upward from the center of the top of the body 2 and fits into the aligning cavity 7. As best seen in FIG. 3, the alignment cavity 7 includes a cylindrical upper portion 7a and a truncated cone-shaped lower portion 7b. The cylindrical upper portion 7a has an inner diameter substantially equal to the outer diameter of the stem of the valve, and is configured to tightly grip the outer surface of the stem. The frustoconical lower part 7 b tapers from the bottom of the cylindrical upper part 7 a and is configured to guide the stem into the upper part 7 a of the alignment cavity 7. For example, if the stem diameter is 3.9 mm, the cylindrical portion is 3.88 mm and a strong connection is made. The diameter of the smaller (upper) end of the frustoconical lower part 7b is equal to the diameter of the stem, and an example of the diameter of the wider end of the frustoconical part of the alignment cavity 7 is 6 mm. .

  An annular frustoconical surface 7c is provided at the top of the cylindrical upper portion 7a of the alignment cavity, and extends slightly inward from the outer periphery of the upper end of the cylindrical upper portion. The apex of the top surface of is located. By pushing down on this surface and pushing down the valve stem and opening the valve, the post-forming gel cleansing composition is discharged through the stem. The total length of the alignment cavity 7 is 4.94 mm, the frustoconical surface 7c at the top of the cavity is 0.44 mm in height, and about one third of the remaining length is the cylindrical upper part 7a. The remaining two thirds are a truncated cone-shaped lower part 7b.

A cylindrical expansion chamber 8 extends upward from the upper edge inside the annular surface 7 c of the alignment cavity 7. The expansion chamber 8 is 3.0 mm in diameter, 1.52 mm in length, and has a volume of about 10.74 mm ² .

  The upper surface of the cylindrical expansion chamber 8 is annular again, this time a flat annular part.

  From the inner edge of the flat annular portion forming the upper surface of the expansion chamber 8, a truncated cone-shaped mouth portion 9 having a pitch of 45 degrees and a height of 0.35 mm extends inward and upward.

  The upper end of the frustoconical mouse part is joined to a cylindrical cavity forming a neck 10 having a narrow diameter of 0.9 mm and a height of 0.9 mm.

  This narrow neck 10 leads to the axially positioned alignment cavity 7, the expansion chamber 8, the frustoconical mouth portion 9 and the bottom of the nozzle 11 extending laterally away from the neck 10. The nozzle 11 is another substantially cylindrical cavity in the cap 3 and has a diameter of 3.0 mm.

  A cap having these characteristics may be injection molded from a plastic such as polypropylene. All of the features of the conduit (ie, nozzle 11, neck 10, mouth portion 9, expansion chamber 8 and alignment cavity 7) are provided in the movable portion 12 of the cap 3. The movable part 12 is provided separately from the peripheral part 13, but is connected to the remaining part of the cap only below the outlet orifice 4 on the front side. When the button 5 is pushed down by making the movable part 12 pivotable, the push-down surface 7c of the alignment cavity 7 is moved downward toward the annular upper surface of the stem (not shown), Begin draining the post-forming gel cleansing composition.

  The nozzle has a 0.5 degree taper on either side and the other generally cylindrical part is very much to allow the metal pins that form the nozzle to be removed during molding. It has a slight taper.

  The container 1 can be manufactured by techniques well known to those skilled in the art. That is, with a bag (not shown) attached, a valve (not shown) is attached to the body 2 of the container, a bag is filled with the post-forming gel composition, and compression is performed between the bag and the wall of the body 2. A gas (eg, nitrogen) can be introduced. The cap 3 is then attached by pressing against the body 2 of the container so that the alignment cavity 7 is aligned with the stem (not shown) of the valve (not shown), and the bead 6 It attaches in the groove | channel (not shown) formed between the main bodies 2. FIG.

A suitable base gel for a post-forming gel composition has the following ingredients:

Component [component] Function [Function] Quantity [Quantity] (% w / w)

Water Solvent 68.80-75.00
(Water) (Solvent)
EDTA / disodium chelating agent 0.05-0.30
(Disodium EDTA) (Chelating Agent)
Citric acid pH adjuster 0.05-0.30
(Citric Acid) (pH Adjuster)
Methyldibromoglutaronitrile and phenoxyethanol Preservative 0.05-0.10
(Methyldibromo Glutaronitrile (Preservative)
and Phenoxyethanol)
Sodium laureth sulfate primary surfactant 17.50-22.00
(Sodium Laureth Sulfate) (Primary Surfactant)
Cocamidopropyl betaine Foaming power enhancer 0.5 ~ 3.00
(Cocamidopropyl Betaine) (Foam Booster)
Coconut oil fatty acid PEG-7 skin conditioning agent 0.50-1.50
Glyceryl / nonionic gelling agent (PEG-7 Glyceryl Cocoate) (Skin conditioning agent
/ non-ionic gelling agent)
Glycerin skin conditioner 0.10-2.00
(Glycerin) (Skin conditioning agent)
Pigment Colorant 0.0005-0.0010
(Colourant)
Fragrance Masking Agent 0.70
(Parfum) (Masking Agent)
Laureth-4 gelling agent 0.00-8.25
(Laureth-4) (Gelling Agent)

This base gel comprises butane, isobutane, isopentane, n-pentane, n-hexane, isohexane (all three isomers: 2-methylpentane, 3-methylpentane and 2,3-dimethylbutane) and A post-forming gel cleansing composition mixed with a post-forming agent such as neohexane (2,2-dimethylbutane) and mixtures thereof at a ratio of 85:15 to 95: 5 (eg 90:10). Offered as. Other suitable gels are exemplified in WO2011042759.

  In use, the user holds the body 2 of the container 1 in one hand, pushes down the button 5 with a finger or thumb and pushes it in the direction of the bottom of the container, ie “down”. Needless to say, expressions such as “above” and “below” are merely for ease of understanding, and the top of the container 1 does not need to be positioned vertically above the bottom during use. Often the container is held at an angle that is at least somewhat upright, but in some cases is oriented horizontally rather than vertically. The user's other hand is typically cupped under the exit orifice 4 to receive the post-forming gel cleansing composition. When the button 5 is depressed, the movable portion 12 of the cap moves downward toward the bottom surface, and the depression surface 7c of the alignment cavity 7 pushes the stem downward to open the valve. This causes the composition exiting the bag to enter the expansion chamber 8 through the stem. The gel extruded from the expansion chamber then enters the neck 10 through the mouth portion 9 and flow is restricted due to the narrow diameter. The composition then flows from the narrow neck 10 to the wider nozzle 11 and the flow rate decreases. As a result, the composition flows along the nozzle 11 and exits the exit orifice 4 at a rate that avoids excessive injection distance. The flow through the expansion chamber before the neck and nozzle maintains the transparency of the gel.

  The discharge distance of filled cans must be within 75 cm to 1 m. This is measured by standing the filled and pressurized unused container 1 on a flat (horizontal) surface and pressing the operating button 5 completely hard. The measurement is performed from the front surface of the container 1 to the farthest point where the gel contacts the flat surface. The above embodiments are described by way of example only. Many variations are possible without departing from the scope of the invention as defined in the appended claims. In particular, the description of the cap was related to a plastic container (and the product for which the cap is to be used) for a bag-on-valve type post-forming gel cleansing composition, where the cap is, for example, a cleansing composition. For non-object post-forming gels (eg, shaving gels), with valves that do not have a valve stem, or “bag-in-can” discharge system It is also possible to find utility for other containers, such as metal cans with

Claims (48)

A cap for a container,
A body including a bag that extends down from the valve and contains a post-forming gel; and a propeller filled in the container outside the bag to apply pressure to the post-forming gel in the bag The post-forming gel is discharged through the valve when the valve is opened.
The cap includes a guideway for directing the composition from the valve to an outlet orifice;
The guide path comprises an expansion chamber for receiving the composition from the valve, a neck smaller in diameter than the expansion chamber and receiving the composition from the expansion chamber, and an outlet orifice and having a diameter larger than the neck A cap for a container, comprising: a large nozzle, and a tapered mouth portion between the expansion chamber and the neck.   The container cap according to claim 1, wherein the mouse portion has a truncated cone shape.   The container cap according to claim 1 or 2, wherein the diameter of the outlet orifice is between 2.5 mm and 3.5 mm.   4. The container cap according to claim 3, wherein the diameter of the outlet orifice is between 2.7 mm and 3.3 mm.   4. The container cap according to claim 3, wherein the diameter of the outlet orifice and the nozzle has a substantially constant inner diameter between 2.5 mm and 3.5 mm.   4. The container cap according to claim 3, wherein the diameter of the outlet orifice and the nozzle has a substantially constant inner diameter between 2.7 mm and 3.3 mm.   7. A cap for a container according to any one of claims 1 to 6, wherein the nozzle and the outlet orifice have a substantially constant diameter of about 3 mm.   The cap for containers according to any one of claims 1 to 7, wherein the expansion chamber and / or the neck and / or the nozzle are cylindrical.   The container cap according to any one of claims 1 to 8, wherein an inner diameter of the neck is between 0.7 mm and 1.1 mm.   The container cap according to claim 9, wherein the inner diameter of the neck is between 0.8 mm and 1 mm.   The container cap according to claim 9, wherein an inner diameter of the neck is about 0.9 mm.   The container cap according to any one of claims 1 to 11, wherein an inner diameter of the expansion chamber is between 2.5 mm and 3.5 mm.   13. The container cap according to claim 12, wherein the inner diameter of the expansion chamber is between 2.7 mm and 3.3 mm.   The container cap according to claim 13, wherein an inner diameter of the expansion chamber is about 3 mm.   15. A cap for a container according to any one of the preceding claims, wherein the diameter of the expansion chamber is substantially equal to the inner diameter of the nozzle and / or the outlet orifice.   The ratio between the inner diameter of the nozzle and / or the expansion chamber and the diameter of the neck is from 2.5: 0.9 to 3.5: 0.9. Cap for container.   The container cap according to claim 16, wherein a ratio of an inner diameter of the nozzle and / or the expansion chamber to a diameter of the neck is 2.7: 0.9 to 3.3: 0.9.   The container cap according to claim 17, wherein a ratio of an inner diameter of the nozzle and / or the expansion chamber to a diameter of the neck is about 3: 0.9.   The container cap according to any one of claims 1 to 18, wherein a length of the neck is between 0.7 mm and 1.1 mm.   The container cap according to claim 19, wherein the length of the neck is between 0.8 mm and 1 mm.   21. The container cap according to claim 20, wherein a length of the neck is about 0.9 mm.   The container cap according to any one of claims 1 to 21, wherein a ratio of a length of the neck to a diameter of the neck is 0.6: 1 to 1.5: 1.   The container cap according to any one of claims 1 to 22, wherein a ratio of a length of the neck to a diameter of the neck is 0.8: 1 to 1: 1.2.   24. A cap for a container according to any one of claims 1 to 23, wherein the ratio of the length of the neck to the diameter of the neck is about 1: 1.   25. The container cap according to any one of claims 2 to 24, wherein a length of the frustoconical mouse portion is between 0.3 mm and 0.4 mm.   The container cap according to claim 25, wherein a length of the truncated cone-shaped mouse portion is between 0.32 mm and 0.38 mm.   27. The container cap according to claim 26, wherein a length of the frustoconical mouse portion is about 0.35 mm.   The container cap according to any one of claims 1 to 27, wherein a length of the expansion chamber is between 1 mm and 2 mm.   29. A container cap according to claim 28, wherein the length of the expansion chamber is between 1.35 mm and 1.65 mm.   30. A container cap according to claim 29, wherein the length of the expansion chamber is about 1.52 mm.   31. The container cap according to any one of claims 1 to 30, wherein a ratio of a length of the expansion chamber to a diameter of the expansion chamber is 0.75: 3 to 2.5: 3.   32. The container cap according to claim 31, wherein the ratio of the length of the expansion chamber to the diameter of the expansion chamber is 1: 3 to 2: 3.   The container cap of claim 32, wherein the ratio of the length of the expansion chamber to the diameter of the expansion chamber is about 1.5: 3.   The container cap according to any one of claims 1 to 33, wherein the expansion chamber and the neck are coaxial.   A container comprising the container cap according to any one of claims 1 to 34.   36. A container according to claim 35 comprising a body made of a plastic material.   The bag extends down from the valve stem, the valve stem is pushed down to open the valve, the guide channel guides the composition from the valve stem to the outlet orifice, and the expansion chamber is connected to the valve stem. 37. A container according to claim 35 or 36, wherein the container receives the composition from.   The container according to any one of claims 35 to 37, wherein the post-forming gel is a post-forming gel cleansing composition.   The container according to any one of claims 35 to 38, wherein the post-forming gel contains a post-forming agent.   40. A container according to claim 39, wherein the post-forming agent is provided in a weight / weight ratio of 5:95 to 85:15 relative to the base gel.   41. A container according to claim 40, wherein the weight / weight ratio between the post-forming agent and the base gel is about 10:90.   The container according to any one of claims 39 to 41, wherein the post-forming agent is a nonpolar saturated aliphatic hydrocarbon having 3 to 6 carbon atoms.   The post-forming agent is selected from butane, isobutane, isopentane, n-pentane, n-hexane, 2-methylpentane, 3-methylpentane, 2,3-dimethylbutane, 2,2-dimethylbutane and mixtures thereof. 43. A container according to claim 42.   44. A container according to any one of claims 35 to 43, wherein the propellant is a non-combustible compressed gas.   45. A container according to any one of claims 35 to 44, wherein the propellant is nitrogen or air.   46. A container according to any one of claims 35 to 45, wherein the propellant is at a pressure of at least 2.2 bar to at least 7.3 bar until substantially all of the contents of the bag are discharged.   47. A container according to any one of claims 35 to 46, wherein the bag is filled with gel, but the initial pressure of the propellant before the gel is discharged is between 6 and 10 bar. .   48. A container according to claim 47, wherein the initial pressure of the propellant is between 7 and 8 bar.

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